Probably not but I live in a country with cold winters where it would be quite useful. It would probably also be useful to industry where high heat is needed for various manufacturing processes. The video mentions this.
Better to have some hot bricks being used for heating i the industries, even with lower efficiency, than having to supply the same thermal energy by storing it as electricity in some chemical battery.
Multipronged approaches are the only way for humans to become more energy-efficient.
Another option might be concentrated solar power.